How are Micrologic P and H trip units powered?

Product line:
Molded case circuit breakers

Resolution:
For protection functions, trip units are automatically self powered by the current flowing through the circuit breaker.

A voltage power supply powers the trip unit with 100 Vac or more between two phases or phase to neutral and current of at least 20% of the sensor rating.  The standard configuration for the voltage probes inside the breaker is at the bottom connections. There is an option for external voltage probes that could be connected anywhere in the system.

They can also be powered by 24 Vdc control power to the F1 (-) and F2 (+) terminals on the trip unit terminal block.

Released for: Schneider Electric Canada